The most important military campaign of Harsha was against the Western Chalukya ruler Pulakesin II. Both the accounts of Hiuen Tsang and the inscriptions of Pulakesin II provide the details of this campaign. Harsha with an ambition to extend his kingdom south of the Narmada river marched against the Chalukya ruler. But the Aihole inscription of Pulakesin II mentions the defeat of Harsha by Pulakesin, who after this achievement assumed the title Paramesvara. Hiuen Tsang’s accounts also confirm the victory of Pulakesin.

Harsha led another campaign against the ruler of Sindh, which was an independent kingdom. But, it is doubtful whether his Sind campaign was a successful one. Nepal had accepted Harsha’s overlordship. Harsha established his control over Kashmir and its ruler sent tributes to him. He also maintained cordial relations with Bhaskaravarman, the ruler of Assam. Harsha’s last military campaign was against the kingdom of Kalinga in Orissa and it was a success.

Thus Harsha established his hold over the whole of north India. The regions modern Rajasthan, Punjab, Uttar Pradesh, Bihar and Orissa were under his direct control. But his sphere of influence was much more extensive. The peripheral states such as Kashmir, Sind, Valabhi and Kamarupa acknowledged his sovereignty.

Harsha and Buddhism

In his early life, Harsha was a devout Saiva but later he became an ardent Hinayana Buddhist. Hiuen Tsang converted him to Mahayana Buddhism. Harsha prohibited the use of animal food in his kingdom and punished those who kill any living being. He erected thousands of stupas and established travellers’ rests all over his kingdom. He also erected monasteries at the sacred places of Buddhists. Once in five years he convened a gathering of representatives of all religions and honoured them with gifts and costly presents. He brought the Buddhist monks together frequently to discuss and examine the Buddhist doctrine.

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